Welcome to the house from hell

After living together for so many years, the iplier egos have more or less learned how to get along. Sure it can still get chaotic at times, but that's to be expected when the majority of them are unhinged or murderers, or more likely both.
However when Mark decides to start a new collaborative project, more egos suddenly arrive, disrupting their semi-peaceful lives. Friends are made, plans are executed, and general chaos is rained down upon an unsuspecting world. But hey, at least nobody has died, yet.